Consider the system composed of four processes linked by a conveyor belt. There is no storage between these processes pictured below. Which statement is best?

Question $2$ options:

The overall system output is $220$ units$/$hr$.$

The process that determines the system's capacity is process $4.$

If process $3$ experiences $5$ minutes of unplanned downtime, the system's overall output is diminished.

Overall system improvement efforts should focus on process $1.$